Table 4.3. Charter school legislation and number of charter schools operating, by state: 2008–09, 2012–13, and 2014–15
 
State Year charter law passed (2014–15) Number of charter schools operating (2012–13) State allows virtual charter schools (2014–15)1 State allows extended learning time in charter schools (2008–09)2
United States 6,079 35 3 29 3
             
Alabama 0    
Alaska 1995 27 Yes   No  
Arizona 1994 542 Yes   Yes  
Arkansas 1995 45 Yes   Yes  
California 1992 1,085 Yes   Yes  
             
Colorado 1993 187 Yes   Yes  
Connecticut 1997 17 Yes   Yes  
Delaware 1995 22 No   Yes  
District of Columbia 1996 102 Yes   Yes  
Florida 1996 581 Yes   Yes  
             
Georgia 1994 93 Yes   Yes  
Hawaii 1994 32 Yes   No  
Idaho 1996 47 Yes   Yes  
Illinois 1996 58 Yes   Yes  
Indiana 2001 72 Yes   Yes  
             
Iowa 2002 3 Yes   No  
Kansas 1994 16 Yes   No  
Kentucky 0    
Louisiana 1995 104 Yes   Yes  
Maine 2011 2 Yes    
             
Maryland 2003 52 No   Yes  
Massachusetts 1993 77 No   Yes  
Michigan 1993 346 Yes   Yes  
Minnesota 1991 176 Yes   Yes  
Mississippi 2010 0 Yes   No  
             
Missouri 1998 57 Yes   Yes  
Montana 0    
Nebraska 0    
Nevada 1997 40 Yes   Yes  
New Hampshire 1996 22 Yes   No  
             
New Jersey 1995 86 No   Yes  
New Mexico 1993 94 Yes   No  
New York 1998 211 No   Yes  
North Carolina 1996 108 Yes   Yes  
North Dakota 0    
             
Ohio 1997 368 Yes   Yes  
Oklahoma 1999 23 Yes   Yes  
Oregon 1999 123 Yes   Yes  
Pennsylvania 1997 175 Yes   Yes  
Rhode Island 1995 18 No   No  
             
South Carolina 1996 55 Yes   Yes  
South Dakota 0    
Tennessee 2002 51 No   Yes  
Texas 1995 628 Yes   Yes  
Utah 1998 88 Yes   No  
             
Vermont 0    
Virginia 1998 4 No   No  
Washington 2012 0 Yes    
West Virginia 0    
Wisconsin 1993 238 Yes   No  
Wyoming 1995 4 Yes   No  
— Not available.
† Not applicable.
1 A virtual school, or cyber school, is a school that delivers academic instruction via the Internet or computer network to students in locations other than a classroom supervised by a teacher who is physically present.
2 Extended learning time refers to public elementary and secondary schools (charter and non-charter) operating longer than six hours per day, and/or with a calendar year exceeding 180 days.
3 The total reflects the number of "Yes" responses in the column.
SOURCE: National Alliance for Public Charter Schools, Measuring Up to the Model: A Ranking of State Charter School Laws, retrieved April 9, 2015 from http://www.publiccharters.org/publications/state-ranking-2015/; National Alliance for Public Charter Schools, Public Charter School Dashboard, retrieved April 9, 2015 from http://www.publiccharters.org/dashboard/home; and National Center for Education Statistics, Digest of Education Statistics 2014, retrieved June 10, 2015 from http://nces.ed.gov/programs/digest/d14/tables/dt14_216.90.asp. Data Source.